AES加密，解密方法

//加密&＃xff0c;docPath:要加密的文件路径&＃xff0c;strKey:秘钥
public static void Encrypt(string docPath, string strKey)
{//分组加密算法var fs &＃61; new FileStream(docPath, FileMode.Open);byte[] buffer &＃61; new byte[fs.Length];fs.Read(buffer, 0, buffer.Length);//得到需要加密的字节数组 //设置密钥,密钥向量&＃xff0c;两个一样&＃xff0c;都是16个bytevar rDel &＃61; new RijndaelManaged();var key &＃61; Encoding.UTF8.GetBytes(strKey);rDel.Key &＃61; key;rDel.Mode &＃61; CipherMode.ECB;rDel.Padding &＃61; PaddingMode.PKCS7;ICryptoTransform cTransform &＃61; rDel.CreateEncryptor();byte[] cipherBytes &＃61; cTransform.TransformFinalBlock(buffer, 0, buffer.Length);var fsEncrypt &＃61; new FileStream(docPath &＃43; "ENC", FileMode.Create, FileAccess.Write);fsEncrypt.Write(cipherBytes, 0, cipherBytes.Length);fsEncrypt.Close();fsEncrypt.Dispose();fs.Close();fs.Dispose();
}

//解密&＃xff0c;fileIn:解密的文件路径&＃xff0c;fileOut:解密后的文件存放路径,strKey:秘钥
public static void Decrypt(string fileIn, string fileOut, string strKey)
{var fsIn &＃61; new FileStream(fileIn, FileMode.Open, FileAccess.Read);var fsOut &＃61; new FileStream(fileOut, FileMode.OpenOrCreate, FileAccess.Write);var rDel &＃61; new RijndaelManaged();var key &＃61; Encoding.UTF8.GetBytes(strKey);rDel.Key &＃61; key;rDel.Mode &＃61; CipherMode.ECB;rDel.Padding &＃61; PaddingMode.PKCS7;var cs &＃61; new CryptoStream(fsOut, rDel.CreateDecryptor(), CryptoStreamMode.Write);var bufferLen &＃61; 4096;var buffer &＃61; new byte[bufferLen];int bytesRead;do{bytesRead &＃61; fsIn.Read(buffer, 0, bufferLen);cs.Write(buffer, 0, bytesRead);} while (bytesRead !&＃61; 0);cs.Close();fsIn.Close();fsIn.Dispose();fsOut.Dispose();
}